21100112001112 has 128 divisors (see below), whose sum is σ = 41043090355200. Its totient is φ = 10164410726400.

The previous prime is 21100112001109. The next prime is 21100112001263. The reversal of 21100112001112 is 21110021100112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21100112001092 and 21100112001101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4303508053 + ... + 4303512955.

It is an arithmetic number, because the mean of its divisors is an integer number (320649143400).

Almost surely, 2^{21100112001112} is an apocalyptic number.

It is an amenable number.

21100112001112 is a deficient number, since it is larger than the sum of its proper divisors (19942978354088).

21100112001112 is a wasteful number, since it uses less digits than its factorization.

21100112001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5777 (or 5773 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21100112001112 its reverse (21110021100112), we get a palindrome (42210133101224).

The spelling of 21100112001112 in words is "twenty-one trillion, one hundred billion, one hundred twelve million, one thousand, one hundred twelve".